Make cylindrical holes on plastic like cutting through butter. The center spike makes all the movement concentric, so you can make good holes even without a stable hand. Extremely helpful for adding photo etch.

A tool set for drilling a hole with no need for a pilot hole

Pin vise [3mm] blade set, efficiently make holes clean and straight.

Five types of diameter 1 / 1.5 / 2 / 2.5 / 3mm

Since a center pin is attached, a hole is opened in the center.
***There is no chisel function like the GH-SB-1-3 [Spin Blade] as this spin blade features a pin point to ensure centralization of holes.